WO1999052214A3 - Communications device - Google Patents

Communications device Download PDF

Info

Publication number
WO1999052214A3
WO1999052214A3 PCT/IB1999/000514 IB9900514W WO9952214A3 WO 1999052214 A3 WO1999052214 A3 WO 1999052214A3 IB 9900514 W IB9900514 W IB 9900514W WO 9952214 A3 WO9952214 A3 WO 9952214A3
Authority
WO
WIPO (PCT)
Prior art keywords
oscillator
frequency
voltage
transitor
communications device
Prior art date
Application number
PCT/IB1999/000514
Other languages
French (fr)
Other versions
WO1999052214A2 (en
Inventor
Stephen W Watkinson
Original Assignee
Koninkl Philips Electronics Nv
Philips Svenska Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninkl Philips Electronics Nv, Philips Svenska Ab filed Critical Koninkl Philips Electronics Nv
Priority to JP55020999A priority Critical patent/JP2002500857A/en
Priority to EP99907802A priority patent/EP0986856A1/en
Priority to KR19997011170A priority patent/KR20010013185A/en
Publication of WO1999052214A2 publication Critical patent/WO1999052214A2/en
Publication of WO1999052214A3 publication Critical patent/WO1999052214A3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1203—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier being a single transistor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
    • H03B5/124—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance
    • H03B5/1243—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance the means comprising voltage variable capacitance diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L2207/00—Indexing scheme relating to automatic control of frequency or phase and to synchronisation
    • H03L2207/06—Phase locked loops with a controlled oscillator having at least two frequency control terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/30—Circuits for homodyne or synchrodyne receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Transmitters (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Superheterodyne Receivers (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A communications device, such as a one-way pager, comprises a receiver having a frequency down-conversion means for frequency converting an input signal using a local oscillator signal generated by a signal generating means, which may comprise a frequency synthesizer. The signal generating means (20) comprises a voltage controlled oscillator (VCO)(50) including an oscillator transitor (68) coupled to dc voltage source (54), frequency determining reactive elements coupled to the oscillator transistor (68) for determinining the frequency to be generated, at least one of the reactive elements (80) being adjustable in response to an applied voltage and means (82, 84) for phase modulating the oscillator transitor (68) in an opposite sense to that caused by voltage perturbations due to noise in the dc voltage supplied by the dc voltage source (54).
PCT/IB1999/000514 1998-04-02 1999-03-25 Communications device WO1999052214A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP55020999A JP2002500857A (en) 1998-04-02 1999-03-25 Communication device
EP99907802A EP0986856A1 (en) 1998-04-02 1999-03-25 Communications device
KR19997011170A KR20010013185A (en) 1998-04-02 1999-03-25 Communications device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9807052.7 1998-04-02
GBGB9807052.7A GB9807052D0 (en) 1998-04-02 1998-04-02 Communications device

Publications (2)

Publication Number Publication Date
WO1999052214A2 WO1999052214A2 (en) 1999-10-14
WO1999052214A3 true WO1999052214A3 (en) 2000-02-24

Family

ID=10829718

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1999/000514 WO1999052214A2 (en) 1998-04-02 1999-03-25 Communications device

Country Status (8)

Country Link
US (1) US6271737B1 (en)
EP (1) EP0986856A1 (en)
JP (1) JP2002500857A (en)
KR (1) KR20010013185A (en)
CN (1) CN1266554A (en)
GB (1) GB9807052D0 (en)
TW (1) TW437153B (en)
WO (1) WO1999052214A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4110668B2 (en) * 1999-05-13 2008-07-02 松下電器産業株式会社 Signal generator
US7519333B2 (en) * 2000-07-03 2009-04-14 Texas Instruments Incorporated Radio architecture for use with frequency division duplexed systems
KR100617139B1 (en) 2004-12-07 2006-08-31 엘지전자 주식회사 A frequency direct conversion receiver for a mobile telecommunication device and a direct conversion method using the device
US8981862B2 (en) 2012-09-13 2015-03-17 Qualcomm Incorporated Cancelling supply noise in a voltage controlled oscillator circuit
CN105429598A (en) * 2015-11-18 2016-03-23 中国电子科技集团公司第三十八研究所 Low cross-modulation microwave down frequency conversion module
US10873486B1 (en) * 2020-01-23 2020-12-22 Goodix Technology Inc. Receiver circuits with blocker attenuating RF filter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101178A (en) * 1990-03-27 1992-03-31 Nec Corporation Crystal oscillator having frequency adjustment responsive to power supply voltage
EP0601515A1 (en) * 1992-12-07 1994-06-15 Nec Corporation Oscillation circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074209A (en) * 1976-12-13 1978-02-14 Rca Corporation Wide range frequency modulation of narrow loop bandwidth phase-locked oscillators
JPS622813Y2 (en) * 1979-07-20 1987-01-22

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101178A (en) * 1990-03-27 1992-03-31 Nec Corporation Crystal oscillator having frequency adjustment responsive to power supply voltage
EP0601515A1 (en) * 1992-12-07 1994-06-15 Nec Corporation Oscillation circuit

Also Published As

Publication number Publication date
TW437153B (en) 2001-05-28
CN1266554A (en) 2000-09-13
GB9807052D0 (en) 1998-06-03
WO1999052214A2 (en) 1999-10-14
KR20010013185A (en) 2001-02-26
JP2002500857A (en) 2002-01-08
EP0986856A1 (en) 2000-03-22
US6271737B1 (en) 2001-08-07

Similar Documents

Publication Publication Date Title
CA2298927A1 (en) Aparatus and method for reducing oscillator frequency pulling during am modulation
WO2003107536A3 (en) Multi-phase frequency generator using injection-locked frequency dividers
HK1049745A1 (en) Apparatus for doppler correction in a wireless communications system.
AU2001246658A1 (en) Device for producing a phase and amplitude modulated radio frequency signal
WO1999052214A3 (en) Communications device
WO2000036742A3 (en) Phase modulating transmitter
EP1292038A3 (en) Transmitter method, apparatus, and frequency plan for minimizing spurious energy
AUPM587094A0 (en) Microwave loop oscillators
CA2158809A1 (en) Delay detection circuit and low-noise oscillation circuit using the same
KR950002269A (en) Time Division Multiple Access Radios and How It Works
FR2716312B1 (en) Continuous phase modulation device by phase locked loop frequency synthesizer.
EP0915570A3 (en) Sampling PLL for high resolution radar systems
WO2004048000A3 (en) Phase-locked loop comprising a pulse generator, and method for operating said phase-locked loop
CA2192881A1 (en) PLL Circuit and Noise Reduction Means for PLL Circuit
TW331055B (en) Phase locked loop having DC level capture circuit
AU1960792A (en) Process for compensation of am/pm distortion of a transmitter by modulation of the local oscillator phase, and associated compensation circuit
GB2363272B (en) System and method for frequency up-conversion
KR870008464A (en) Circuit arrangement to generate click signal
EP0741453A3 (en) Controlled oscillator circuit for controlling an oscillator for use within a phase-locked loop
EP1300938A3 (en) System and method for frequency up-conversion
TW349304B (en) VCO phase modulation device and method and pulse radar using the phase modulation device
KR950022510A (en) Shift control circuit according to frequency change
KR960039654A (en) Phase Locked Loop of Microwave Oscillators
WO2004015869A8 (en) Phase-locked-loop circuit and method
JPS641336A (en) Microwave transmitter

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 99800468.5

Country of ref document: CN

AK Designated states

Kind code of ref document: A2

Designated state(s): CN IN JP KR

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

WWE Wipo information: entry into national phase

Ref document number: 1999907802

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 1999 550209

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 1019997011170

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: IN/PCT/1999/105/KOL

Country of ref document: IN

121 Ep: the epo has been informed by wipo that ep was designated in this application
AK Designated states

Kind code of ref document: A3

Designated state(s): CN IN JP KR

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

WWP Wipo information: published in national office

Ref document number: 1999907802

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1019997011170

Country of ref document: KR

WWW Wipo information: withdrawn in national office

Ref document number: 1019997011170

Country of ref document: KR

WWW Wipo information: withdrawn in national office

Ref document number: 1999907802

Country of ref document: EP